- Make 'host' required. - Fix doc for port setting - add doc for index - add doc for query
- Make 'host' required.
- Fix doc for port setting
- add doc for index
- add doc for query

joekiller/logstash-kafka,tinglinux/logstash-kafka,Aloomaio/logstash-kafka,Aloomaio/logstash-kafka,joekiller/logstash-kafka,opentable/logstash-kafka,opentable/logstash-kafka,tinglinux/logstash-kafka